ChatGPT selbst hosten: Private KI ohne Abo-Gebühren
Run a full ChatGPT alternative on your infrastructure. Keep conversations offline. Stay GDPR-compliant. Pay once per server, not per user.
Why self-host ChatGPT?
The cloud vendors want you locked in. Self-hosting gives you back control.
Data stays offline
ChatGPT Plus sends every conversation to OpenAI's servers for training. Open WebUI on your infrastructure keeps it all local. No API calls. No external logging. Your data never leaves your network.
No per-seat fees
ChatGPT Plus costs €20/month per user. Claude Pro is €20/month. Scale that to 50 employees: €1,200/month vs. a flat server cost. Self-hosted Open WebUI eliminates licensing overhead entirely.
GDPR by design
German companies must keep customer data inside the EU under DSGVO law. Self-hosted Open WebUI on German servers gives you full control over data residency, audit trails, and retention. No vendor terms to negotiate.
Get running in minutes
From sign-up to your first chat: 3 steps.
Pick Small, Medium, Large, or Unlimited. We handle the infrastructure, backups, and HTTPS certificates automatically.
Click Deploy. Opsily provisions a managed instance with Docker, PostgreSQL, and automatic updates. No Kubernetes. No config files.
Point Open WebUI to a local Ollama instance (for fully offline AI) or to any OpenAI-compatible API (Claude, Mistral, Groq). You control which models run.
Pick Small, Medium, Large, or Unlimited. We handle the infrastructure, backups, and HTTPS certificates automatically.
Click Deploy. Opsily provisions a managed instance with Docker, PostgreSQL, and automatic updates. No Kubernetes. No config files.
Point Open WebUI to a local Ollama instance (for fully offline AI) or to any OpenAI-compatible API (Claude, Mistral, Groq). You control which models run.
Choose your server size
Pick Small, Medium, Large, or Unlimited. We handle the infrastructure, backups, and HTTPS certificates automatically.
Deploy Open WebUI
Click Deploy. Opsily provisions a managed instance with Docker, PostgreSQL, and automatic updates. No Kubernetes. No config files.
Connect Ollama or APIs
Point Open WebUI to a local Ollama instance (for fully offline AI) or to any OpenAI-compatible API (Claude, Mistral, Groq). You control which models run.
Invite your team
Open WebUI includes team channels, role-based access, LDAP/SSO, and audit logs. Multi-tenant by default. No extra SaaS.
GDPR compliance is not optional
When OpenAI processes your conversations on ChatGPT, it does so as a data processor. But the terms allow OpenAI to use your data for model training. That violates GDPR Article 6 for many companies: you cannot freely consent to training on behalf of your users.
Self-hosted Open WebUI running on German servers (or your own premises) solves this entirely. Data never leaves your infrastructure. No third-party processor. No training. No cross-border transfers. You own the encryption keys.
Novalutions GmbH, a German tech firm, ran the numbers:
- Setup: One Ubuntu server in Frankfurt, Docker, local Ollama instance (Mistral 7B model).
- Cost: €30/month for Opsily's Small plan.
- Alternative cost: ChatGPT Plus (€20 x 8 employees) + Claude Pro (€20 x 2 specialists) = €200/month.
- Savings: €170/month, €2,040/year.
- Compliance: Full DSGVO alignment. No external API calls. Audit logs under their control.
They deployed on a Thursday, trained their team by Friday, and went live the following Monday.
The Ollama + Open WebUI stack
Ollama runs open-source language models (Mistral, Llama 2, Neural Chat) on your hardware. Open WebUI provides the ChatGPT-like interface on top. Together, they form the self-hosted standard that German enterprises use.
Opsily manages the entire stack. You focus on your business. We handle database migrations, SSL certificates, storage scaling, and backups to German data centers.
Enterprise-grade security and compliance
Self-hosted means you decide the rules.
GDPR Compliant
Data residency in German EU servers. Full control over retention, audit trails, and user consent.
Isolated VMs
Your Open WebUI instance runs on dedicated infrastructure. No shared containers. No nosy neighbors.
Secure Infrastructure
Your data is hosted in secure German data centers with continuous physical security monitoring and infrastructure compliance.
Offline capable
Run Ollama locally on your own hardware for air-gapped deployments. Zero external dependencies.
Open Source
Open WebUI is community-maintained with 18.7K commits. Security through transparency.
Transparent, flat-rate pricing
All plans include GDPR-compliant German hosting, automatic backups, SSL certificates, and team management. No surprises. No per-user fees.
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Questions about self-hosting ChatGPT?
Yes, when deployed on your infrastructure or our German servers with local Ollama models. No external API calls means no data transfer outside the EU. You retain full control of user data, retention policies, and audit logs. Compare this to ChatGPT Plus: OpenAI processes all conversations on their servers for model training, which violates GDPR consent rules for most companies. Self-hosted avoids that risk entirely.
Ready to ditch ChatGPT's subscription treadmill?
Deploy Open WebUI on a German server in under 5 minutes. No credit card required.